and now also a similar letter sent to the president of the united states, president obama. the letter never reached the white house. it was intercepted at an offsite screening center as all parcels, all letters sent to the president are, but once again they're investigating that initial test positive, but that's just initial. it could change. there are other letters, suspicious letters and packages also being investigated right now on capitol hill in the hart senate office building, the russell senate office building an individual walking around with a backpack delivering letters and law enforcement now questioning that individual to see if those letters do contain any suspicious powder, any suspicious material. certainly something as deadly as ricin would be a huge, huge problem. reminds a lot of us of the anthrax-laced letters that were delivered to u.s. senators, to members of the news media back at the end of 2001 shortly after 9/11 that killed some individuals, including two postal workers who just randomly touched those letters and the anthrax actually wound